Maximum Spreading of Impacting Ferrofluid Droplets under the Effect of Nonuniform Magnetic Field

This article investigates the maximum spreading of ferrofluid droplets impacting on a hydrophobic surface under nonuniform magnetic fields. A generalized model for scaling the maximum spreading is developed. It is observed that, if the magnetic field strength is zero, a ferrofluid droplet not only d...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 38(2022), 8 vom: 01. März, Seite 2601-2607
1. Verfasser: Li, Qian-Ping (VerfasserIn)
Weitere Verfasser: Ouyang, Yi, Niu, Xiao-Dong, Jiang, Youhua, Wen, Ming-Fu, Li, Ze-Qin, Chen, Mu-Feng, Li, De-Cai, Yamaguchi, Hiroshi
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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520 |a This article investigates the maximum spreading of ferrofluid droplets impacting on a hydrophobic surface under nonuniform magnetic fields. A generalized model for scaling the maximum spreading is developed. It is observed that, if the magnetic field strength is zero, a ferrofluid droplet not only demonstrates similar spreading dynamics as the water droplet but also obeys the same scaling law for the maximum spreading factor. Therefore, this article emphasizes the effects of magnetic field strength. In this regard, a dimensionless parameter (Nm) is introduced as the ratio between inertial force and Kelvin force, with an assumption that the kinetic energy mainly transforms to thermal energy. This parameter allows us to rescale all experimental data on a single curve with the Padé approximant, which is applicable to a wide range of impact velocities and magnetic field strengths 
650 4 |a Journal Article 
700 1 |a Ouyang, Yi  |e verfasserin  |4 aut 
700 1 |a Niu, Xiao-Dong  |e verfasserin  |4 aut 
700 1 |a Jiang, Youhua  |e verfasserin  |4 aut 
700 1 |a Wen, Ming-Fu  |e verfasserin  |4 aut 
700 1 |a Li, Ze-Qin  |e verfasserin  |4 aut 
700 1 |a Chen, Mu-Feng  |e verfasserin  |4 aut 
700 1 |a Li, De-Cai  |e verfasserin  |4 aut 
700 1 |a Yamaguchi, Hiroshi  |e verfasserin  |4 aut 
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